// This Jenkinsfile defines a declarative pipeline
pipeline {

    options {
        disableConcurrentBuilds()
    }
    agent any
    tools {
        jdk 'JDK 25'
    }

/*
    agent {
        docker {
            image 'maven:3.9.3-eclipse-temurin-21'
            args '-v $HOME/.m2:/root/.m2'
        }
    }
 */


    // Defines the sequence of stages that will be executed
    stages {
        // This stage checks out the source code from the SCM (Source Code Management) system
        stage('Checkout') {
            steps {
                // This command checks out the source code from the SCM into the Jenkins workspace
                checkout scm
            }
        }
        stage('Build') {
            steps {
                sh 'mvn -B clean package'
            }
        }

        stage('Docker Build') {
              steps {
                sh 'docker build -t upquark/swiss-backend:latest -t upquark/swiss-backend:${BUILD_NUMBER} .'
              }
        }

        stage('Push the Docker Image to DockerHub') {
            steps {
                script {
                    withCredentials([string(credentialsId: 'c7783e4f-2f79-482f-885f-dfb39f8c02d3', variable: 'docker_hub')]) {
                        sh 'docker login -u upquark -p ${docker_hub}'
                    }
                    sh 'docker push upquark/swiss-backend:latest'
                    sh 'docker push upquark/swiss-backend:${BUILD_NUMBER}'
                }
            }
        }

        stage('Deploy to Kubernetes') {
            steps {
                script {
                    kubeconfig(credentialsId: 'k3s-kubeconfig') {
                        sh 'cat k8s/deployment-test.yaml | sed "s/latest/$BUILD_NUMBER/g" | kubectl apply -n swiss -f -'
                        sh 'kubectl apply -f k8s/service-test.yaml -n swiss'
                        sh 'cat k8s/deployment.yaml | sed "s/latest/$BUILD_NUMBER/g" | kubectl apply -n swiss -f -'
                        sh 'kubectl apply -f k8s/service.yaml -n swiss'
                    }
                }
            }
        }
    }
}